(19)
(11) EP 0 326 245 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.07.1990 Bulletin 1990/27

(43) Date of publication A2:
02.08.1989 Bulletin 1989/31

(21) Application number: 89300218.8

(22) Date of filing: 11.01.1989
(51) International Patent Classification (IPC)4: F23N 5/24, F23N 1/00
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 21.01.1988 US 146556

(71) Applicant: HONEYWELL INC.
Minneapolis Minnesota 55408 (US)

(72) Inventors:
  • Adams, Wilmer L.
    Fridley Minnesota 55432 (US)
  • Black, Robert A., Jr.
    Brooklyn Park Minnesota 55443 (US)
  • Bartels, James I.
    Hudson Wisconsin 54016 (US)
  • Landis, William R.
    Bloomington Minnesota 55431 (US)

(74) Representative: Fox-Male, Nicholas Vincent Humbert 
Honeywell Control Systems Limited, Honeywell House, Arlington Business Park
Bracknell, Berkshire RG12 1EB
Bracknell, Berkshire RG12 1EB (GB)


(56) References cited: : 
   
       


    (54) Fuel burner control system


    (57) A heating plant (11) has a fuel burner (12) operated by a fuel burner control system that utilizes a program module including a microcomputer (51), memory (52), analog-to-digital converters (54-55), and sensor monitoring arrangements (53) to track the status of analog sensors. This system insures that the sensors are not open circuited or short circuited. This system can be provided with a keyboard and display unit (15) having continuous output information on the status of temperature, pressure, and flame current.







    Search report